This is an annotated catalog of the vascular flora of Portland and vicinity. It contains 1,553 taxa in 126 families, and compares the historical flora with changes that have occurred since 1925. Sources included addition ...

The California vernal pool-endemic grasses Orcuttia tenuis and Tuctoria greenei, both listed under the
U.S. Endangered Species Act, were recently found in Modoc County, California, a short distance south of
the Oregon ...